1973 DATSUN B110 Service Repair Manual

STEERING

CD

f
w

1
rI

r

EoJiI
c

@
j
@
3
2
j

Jl

1
Lower
column
shaft

2

Upper
column

shaft

3
Lower
column

tube

4
Jacket
tube
5

Plastic

pin

6
Column
collar

7

Column
bush
8

Washer

9

Snap
ring

10

Steering
post
clamp

Fig
ST
15

Collapsible
steering

STEERING
COLUMN

G

ZJ
3

4mi
t
i
r
M
m

i
i
Vtrt
J
trict

I
LoweI
column
shaft

2
Plastic

pin

13

I
Upper
column

shaft

14
I
Lower
column
tube

Fig
ST
16

Steering
column

ST
9

CHASSIS

The

construction
of
the

steering
column
is

as
such
that

the
lower
shaft

is
fitted
into
the

upper
tube
when
a

compressing
force
is

applied
to
the
lower

shaft

r

I

1
V

f

7
Steering
torque
is
transmitted

by
the
lower
shaft

and

upper
tube
The
lower
shaft

adopts
a

special
shape
a

circle
with
two

straight
cut

edges
and
the

upper
tube

interior
is

tightly
fitted

against
the

lower
shaft
exterior

toward
the

entire
area
In
addition
four

plastic
pins

completely
eliminate

gap
between
the
lower

shaft
exterior

and

upper
tube
interior

I

I
Jacket
lube

2
Shaft

stopper

I
3

I
Column
coUar

4

Column
shaft

When
a

compressing
force
is

applied
the
above

described

plastic
pins
are
cut
and
the
lower

shaft
is

fitted

into

the

upper
tube

When
the
lower

shaft
is

once
fitted

into

the

upper
tube
the

shaft
end

spreads
and
the
lower

shaft
cannot
be
withdrawn
unless
an

extremely
high
load

is

applied
Fig
ST
1
7

Shaft
stopper

Moreover

for
rearward
column
shaft

projection
the

collar
for

steering
lock
installed
on
the
shaft

runs

against

stoppers
in
three

places
on
the

jacket
tube
which
allows

the
column
shaft

fitting
and
thus
reaIWard

projection
is

prevented

Note
In
no
event
should
an

impact
or

large
power
be

applied
to
the
shaft

with
a
hammer
or
other
matter

during
disassembly
or

reassembly
The

column
shaft
lower
end
and

upper
end

are

supported

respectively
by
two

worm

hearings
and
a

colwnn

bushing

JACKET
TUBE

w
1

U
II
I

II

I

r

liJl
I
I
D

I
1

1
Mesh
tube

I
2
Jacket

tube

Fig
ST
18

Jacket
tube

ST
10

STEERING

The

jacket
tube
is
of
a
mesh

and
a

part
of

which
is

punched
in
rhombus

forming
an

energy

absorbing
part
of

the

collapsible
steering

Upper
and
lower

guide
tubes
two

guide
tubes

joined

with

polyacetal
resin

are
inserted
into

the
mesh
tube
so

STEERING
POST
CLAMP
that
an

energy
generated

by
collision
can
be
absorbed
as

smoothly
as

possible
with
a
low
load
The

guide
tubes

function
as
a

guide
for

mesh
tube
while
the

mesh
tube

is

collapsed
and

improve

bending
rigidity
of
the

entire

jacket
tube

1

1
Plastic

pin

I
2

I
Clamp

1
3

I
Sliding
block

Fig
ST

19

Steering
post
clamp

The

steering
post
clamp
is
secured

on
the

jacket
tube

with
bolt

08110
81210
and

in
addition
two
aluminum

sliding
blocks
are
set

stationarity
on
the
main

body
with

plastic

pins

Note
For
the
bolt
used
to
install
the

steering

post
clamp

on

the

jacket
tube
do
not
use
bolt

having
a

length

exceeding
the
rated

length
or
otherwise
the
bolt

interferes

the
column
shaft

causing
a
trouble

Tightening
torques
are
as

follows

Steering
post
clamp
Jacket
tube

0
8
to
1
0

kg
m
5
8
to
7
2
ft
lb

Steering
post
clamp

Steering

post
bracket

1
5
to
1
8

kg
m
10
8
to
13
0
ft
Ib

Fig
ST
20

Steering
post

clamp
bolts

ST
11

CHASSIS

The

sliding
block
is
secured
on
the

steering

post

bracket
with

bolts

upper
half
of
the

steering
column
is

supported
on
the

bracket
and
thus
the

steering
post

clamp
is
installed

on
the

body

When
a

large

impact
is

applied
from
the

driver
side
the

plastic

pins
are
cut
off
and

leaving
the

sliding
block
in
the

steering
post
bracket
side
the

clamp
proper
is

disengaged

downward

together
with
the

jacket
tube

For

any
force

applied
from
front
direction
of
the

vehicle
the

steering
post
clamp
sliding
block

does
not

move
rearward
This
construction
is
called
One

way
slide

system
and
with
this
construction

projection
of
the

column
shaft
toward

the
driver
is

prevented
completely

COLUMN
BEARING

b

ciJ
STEERING

WHEEL
SIDE

1
Jacket
tube

2
Washer

3

Snap
ring
4
Column
bush

5
ColurtlO
shaft

Fig
ST
21

Column

bearing
Construction
of
the
column
shaft

upper
bearing
is

as

such
that
both
radial
and
thrust
forces

are
absorbed

DISASSEMBLY

First
remove
the

snap
ring
from
the

upper
surface
of

the

column

bushing
Thereafter

general
instructions
for

ordinary
steering
apply

Inspect
and

adjust
the
sector

shaft
worm
ball

nut
unit

adjust
screw
unit

worm

bearing
and
other
relative

parts

in
accordance
with
the
instructions
for

ordinary
type

steering

INSPECTION

Inspect
the

parts
such
as
column

shaft

jacket
tube
etc

which

are
used

to
absorb

energy
in

accordance
with
the

following
instructions

Check
the
column

shaft

plastic
pin
for
breakdown

2
Check
the

steering
lock
collar

for

warping
and
screw

for
breakdown

3
Measure
tolal

length
of
the

jacket
tube

Replace
if

contracted
However
when

tube

collapse
is
within
3
mm

0

1181
in

adjustmenl
by
means
of

bushing
is
also

possible

4

Check
the

steering
post
clamp
sliding
block
for

tightness

5

Check
the
column
shaft
for

bending
When
the

A
and

B

portions
are

supported
the

bending
should
be
less
than

1
0
mm
0
0394
in

at
the
C

portion

I

l

j
B
H
I

I
lO

J
L
5

0
1969

C
J6

A

UNIT
mm
in

Fig
ST
22
Measurement

of
defective
column

shafr

ST
12

STEERING

REASSEMBLY

Adjust
alignment
and
install
the

worm
shaft
and

jacket
tube
on
the

housing

2

Apply
bearing
grease
to
the
interior

sufficiently
and

screw
the

column

bushing
above
the

rated

position

3

Apply
washer
and

apply
the

snap

ring
to

the

groove

correctly
and

securely

4
Return
the

column

bushing
allowing
the

top
surface

of
the

bushing
coming
into

contact
wi
th
the
lower

surface

of
the
washer

adjust
the

clearance
to
less
than
1
0
mm

0
0394
in
and

adjust
the

bushing
position
correctly
so

that
column
shaft

turning
torque
is
the

rated
value

Note
If

the
clearance
is

too
small
the

steering
becomes

heavy

5
Line

up
the

jacket
tube

upper
end
to
the

groove
on

the
outer

circumference
of
the
column

bushing
and

securely
caulk

two

symmetrical
positions
on
the
circum

ference
When
caulked

securely
make
sure
that
inner

diameter
of
the

jacket
tube
is
27
5
mm

dia
1

083
in

dia

and
that

length
of

caulking
is
4
mm
0
1575
in
j
410
1575

27
5
dia
1

0831

V

UNIT
mm
in

Fig
ST
23

Note

Be
careful
not
to

crack
the
tube

or
deform
the

bushing
while

caulking
Moreover
when
caulked

make
sure
that
outer
diameter
of
the

jacket
tube
is

less
than
31
8
mm
dia
1
252
in
dia

6

When
column

bushing
position
is

found
to
be

improper
after

caulking
recaulk
or

adjust
with
the

following
shim

s

Thickness

mm
in

0

05
0
0020

0
10
0
0039

7
Install
the

sector
shaft

adjust
screw
and
side

cover

in

the
manner
identical
to

ordinary
steering

STEERING
LINKAGE

CONTENTS

REMOVAL

DISASSEMBl
Y

INSPECTION
AND
REPAIR

ASSEMBl
Y
ST
14

ST
14

ST
15

ST
15
INSTAllATION

ACCIDENT

COLLISION

ADJUSTMENT
ST
16

ST
16

ST
16

ST
13

CHASSIS

G

II

1

I
Steering
gear

2

Gear
arm
3

I
Side
rod

4
Cross
rod

I
I
Idler
arm

Knuckle
arm

Fig
51
24
SteeTin

linkaKe

REMOVAL

Jack

up
front
of
the

vehicle
and

support
with
stands

2
Remove
cotter

pins
and

castellated
nuts
which
are

used
to

fasten
side
rod
ball

studs
to

knuckle
arms

using

Steering
linkage

joint
puller
ST27190000

3

Free
the
ball
studs
from
knuckle
arms

by

backing
up

boss
with
a

large
hammer
and

striking
the

opposite
side

with
a
hammer

4
Remove

the
ball
studs
of
cross
rod
from
the

gear
arm

and
idler

assembly
under
the
same

procedure
as

described

in

step
3
The
cross
rod
and
side
rods
can

be
removed
as

an

assembly

5
Remove
the

idler

assembly
from
the

side
member

by

taking
off
two

fixing
bolts

DISASSEMBLY

Disconnect
both
side
rods

from
the

cross
rod
under

the
same

procedure
as
described
in
Removal
2

Loosen

clamp
bolts
unscrew

the
socket

assembly

and

remove
the
socket

from
the
side
rods

3
Remove

the
idler
arm
nut

and
disassemble
the
idler

assembly

I
1

Seal

lip
assem

bly

12
I
Bu
h

Fig
ST

25
Sectional
view

of
idler
arm

ST
14

fJ

J

STEERING

INSPECTION
AND
REPAIR

I
Check
the
idler
rubber

bushing
for

damage
wear
and

play
and

replace
bushing
if

necessary

2

Check
the
cross
rod

and
side
rods
for

damage
bend

and
crack
and

replace
them
if

necessary

3
Check

each
ball

joints
for

play
due

to
lack

of

spring

action
of

the

push
spring
or
a

damaged
ball
stud

11
I
Ball
stud

2

Dust
cover

143
I
Clamp

Spring
seat

Fig
ST
27

Sectional
view

of
ball
stud
cross

rod

If

any
abnormal
condition
is
detected

replace
as
a

complete
unit

They
can
not
be
disassembled

I
I
Ball
stud

Dust
cover

13
I
Clamp

4

Spring
seat

ASSEMBLY

FiJI
ST
26

Sectional
view

of
ball
stud
side

rod
Assembly
can
be

accomplished
in
the
reverse

order
of

disassernbly
Pay
attention
to

the

following
points

l

I

f

t

ljo

Fig
ST
28
Front
bottom
view

of
steeritJg
linkage
on
vehicle

ST
15

CHASSIS

The

following
tightening
torque
of
nuts

shall
be

adopted

Ball
stud

nut

3
0
to
5
0

kg
m

21
7
to

36
2
ft

lb

Gear
arm
nut

14

kg
m

101
ft
lb

Idler
arm

nut

57
to
6
3

kg
m
41
2

to
45
6

ft
lb

2

Assembly
of

the
idler

assembly
is

accomplished
as

follows

I
Apply
soap
water

on
the

outer
circumference
of

bushing

Press
the

bushing
into
the
idler

arm

carefully
until
the

bushing
protrudes
equally
at
the
both

sides

2

Fit
idler

arm

body
in
the
rubber

bushing

Keep
the

idler
arm
center
line
in

parallel
with
the

chassis
center
line

INSTALLATION

Installation
can
be

accomplished
in
the
reverse

order
of

removal

Pay
attention
to

the

following

points

Set
the

length
of
both
side

rods
to

296
8
mm
11

69

in
It
should
be
done

between
the

ball
stud
centers

2

Check
wheel

alignment
and

if

necessary
adjust
it

ACCIDENT
COLLISION

When
accident
collision
occurs

unfortunately
and

the

vehicle

especially
its
front
unit
is

damaged
conduct

inspection
in

accordance
with
the

following
instruction

Inspect
the

steering
system

particularly
carefully

because
it
is
a

very
important
unit
for

driving

I

Check
both
side

steering
angles
for
correct
balance

2

With
the
tires

positioned
at
neutral

steering
wheel
bar
for

correct

position
check
the
l
3

Operate
the

steering
system
and
check

it
for

sliding

noise

4

Check
the

operation
for
smoothness

l
5
Check
the

side
rod
and
cross

rod
for

bending

6
Check
the

gear
arm

for
crack

7
Check

the

gear
housing
tiglltening
bolt
for
slackness

and

installation
boss

for
crack

8

Check
the

sector
shaft
serration

for

twisting

9

Check
the
sector

gear
for

crack

10

Check
the

ball
screw

for

pitting

II

Check
the

column
shaft
for

bending
crack
and

sliding
scar

12

Check
the

jacket
tube
for

bending

13
Check
the

steering
post
clamp
for

existance
of

column
offset

14
Check
the

side
member

gear
housing
installation
unit

for
deformation

IS

Check
the

portion
of

the

steering
post
bracket

installed
on

the

steering
post
clamp
for
correct

installation

AD
JUSTMENT

I

Toe
in

The

procedure
of

toe
in

adjustment
is
outlined
in

section

FRONT
AXLE
AND
FRONT
SUSPENSION

2

Steering
angle

Under
the

specified
load
4

passengers
adjust
the

stopper
bolt
of

the
knuckle
arm
so
that
the
inner
wheel

has
an

angle
of
430

Note

Specified
steering
angle
of
wheel
is
430
for
inner

wheel
and
36005
for
outer

wheel

ST
16